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TIBPAL20L8-7C, TIBPAL20R4-7C, TIBPAL20R6-7C, TIBPAL20R8-7C
TIBPAL20L8-10M, TIBPAL20R4-10M, TIBPAL20R6-10M, TIBPAL20R8-10M
HIGH-PERFORMANCE IMPACT-X ™ PAL
®
CIRCUITS
SRPS005E − D3307, OCTOBER 1989 − REVISED DECEMBER 2010
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
Copyright © 2010, Texas Instruments Incorporated
1
PRODUCTION DATA information is current as of publication date. Products
conform to specifications per the terms of Texas Instruments standard
warranty. Production processing does not necessarily include testing of all
parameters.
• High-Performance Operation:
f
max
(no feedback)
TIBPAL20R’ -7C Series . . . 100 MHz
TIBPAL20R’ -10M Series . . . 62.5 MHz
f
max
(internal feedback)
TIBPAL20R’ -7C Series . . . 100 MHz
TIBPAL20R’ -10M Series . . . 62.5 MHz
f
max
(external feedback)
TIBPAL20R’ -7C Series . . . 74 MHz
TIBPAL20R’ -10M Series . . . 50 MHz
Propagation Delay
TIBPAL20L8-7C Series . . . 7 ns Max
TIBPAL20L8-10M Series . . . 10 ns Max
• Functionally Equivalent, but Faster Than
Existing 24-Pin PLD Circuits
• Preload Capability on Output Registers
Simplifies Testing
• Power-Up Clear on Registered Devices (All
Register Outputs are Set Low, but Voltage
Levels at the Output Pins Go High)
• Package Options Include Both Plastic and
Ceramic Chip Carriers in Addition to Plastic
and Ceramic DIPs
• Security Fuse Prevents Duplication
• Dependable Texas Instruments Quality and
Reliability
DEVICE
I
INPUTS
3-STATE
O OUTPUTS
REGISTERED
Q OUTPUTS
I/O
PORT
S
PAL20L8 14 2 0 6
PAL20R4 12 0 4 (3-state buffers) 4
PAL20R6 12 0 6 (3-state buffers) 2
PAL20R8 12 0 8 (3-state buffers) 0
description
These programmable array logic devices feature high speed and functional equivalency when compared with
currently available devices. These IMPACT-X™ circuits combine the latest Advanced Low-Power Schottky
technology with proven titanium-tungsten fuses to provide reliable, high-performance substitutes for
conventional TTL logic. Their easy programmability allows for quick design of custom functions and typically
results in a more compact circuit board. In addition, chip carriers are available for futher reduction in board
space.
All of the register outputs are set to a low level during power-up. Extra circuitry has been provided to allow loading
of each register asynchronously to either a high or low state. This feature simplifies testing because the registers
can be set to an initial state prior to executing the test sequence.
The TIBPAL20’ C series is characterized from 0°C to 75°C. The TIBPAL20’ M series is characterized for
operation over the full military temperature range of −55°C to 125°C.
IMPACT-X is a trademark of Texas Instruments Incorporated.
PAL is a registered trademark of Advanced Micro Devices Inc.
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
I
I
I
I
I
I
I
I
I
I
I
GND
V
CC
I
O
I/O
I/O
I/O
I/O
I/O
I/O
O
I
I
TIBPAL20L8’
C SUFFIX . . . JT OR NT PACKAGE
M SUFFIX . . . JT PACKAGE
(TOP VIEW)
3212827
12 13
5
6
7
8
9
10
11
25
24
23
22
21
20
19
I/O
I/O
I/O
NC
I/O
I/O
I/O
I
I
I
NC
I
I
I
426
14 15 16 17 18
I
I
GND
NC
I
I
O
I
I
I
NC
I
O
TIBPAL20L8’
C SUFFIX . . . FN PACKAGE
M SUFFIX . . . FK PACKAGE
(TOP VIEW)
NC
− No internal connection
Pin assignments in operating mode
V
CC
OBSOLETE - No Longer Available
